Factorial of a number using C #

Finding the factorial of a number in C#
the code is meant for finding the factorial both recursive and non recursive

 public static int Factorial(int n)
        {
            int FactorialValue = 1;
            for (int i = n; i > 0; i--)
            {
                FactorialValue = FactorialValue * i;
            }
            return FactorialValue;
        }
        public static int recursiveFactorial(int n)
        {
            if (n > 1)
            {
                return n * recursiveFactorial(n - 1);
            }
            else
            {
                return 1;
            }
        }
        public static int recursiveFactorialIntermediate(int n, int[] nArray)
        {
            if (n > 1)
            {
                nArray[n - 1] = n * recursiveFactorialIntermediate(n - 1, nArray);
                return nArray[n - 1];
            }
            else
            {
                return 1;
            }
        }